Pulmonary Testing

Spirometry

Description

This test is given to smokers to see if they have a pulmonary illness, such as asthma or COPD (chronic obstructive pulmonary disease).

How is this test done?

A specialized technician in pulmonary function will explain the procedure and then guide you through it. 

Is it dangerous?

Not any more than a quick, long exhalation. If your lungs spasm (bronchospasm), you may experience shortness of breath. If you occasionally faint during physical activity, please inform the technician.

Do I need to prepare?

You should eat a light meal approximately an hour before, and refrain from smoking for at least two hours before the test.

If you are pregnant, we recommend that you do not take this test. You can make an appointment after you give birth, even if you are breastfeeding. 

You should not use an inhaler before the test because it dilates the bronchial tubes. If you feel too short of breath, telephone to cancel your appointment. 

Metacholine Challenge Test

Description

This test uses spirometry (blowing into a device) to determine if your bronchial tubes are more sensitive to irritants than a healthy person’s. 

Why this test?

This test determines if your bronchial tubes are more sensitive to irritants such as metacholine and can confirm if you suffer from asthma. It also helps to measure the level of bronchial reactivity: low, moderate, or severe.

How is this test done?

A specialized technician in pulmonary function will explain the procedure. Spirometry is done before and after having inhaled stronger and stronger doses of metacholine. A healthy person will not be affected whereas a person with asthma will experience minor bronchospasms.

Is it dangerous?

Not any more than a quick, long exhalation. If your lungs spasm (bronchospasm), you may experience shortness of breath. If this is the case, a bronchodilator such as the Ventolin® inhaler will usually treat the symptoms. If you occasionally faint during physical activity, please inform the technician.

Do I need to prepare?

If you are pregnant, we recommend that you do not take this test. You can make an appointment after you give birth, even if you are breastfeeding. 

You should not use an inhaler before the test, because it dilates the bronchial tubes. If you feel too short of breath, telephone to cancel your appointment. 

Do not use any allergy or cold medications with antihistamines 48 to 72 hours before the test (if you have any questions, talk to our technician or to your pharmacist).

You should eat a light meal before the test.